The core activities of Greenbull Group encompass the following areas: Real Estate: brokerage services, sale of luxury properties, crowdfunding platform for real estate investments; Education: no specific activities mentioned; Finances & Investments: investments in real estate, crowdfunding, private investor club; Consumption: sports nutrition, gastronomy (hot dogs, fish burgers); Media & Communication: media platform for education and training, TV channel. The company is thus a conglomerate with diverse activities across various industries.